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Preparation method of silver nanowire conductive film

A technology of silver nanowires and conductive films, applied in the direction of equipment for manufacturing conductive/semiconductive layers, cable/conductor manufacturing, conductive layers on insulating carriers, etc., can solve the problem of unsatisfactory removal of PVP on the surface of silver nanowires, etc. problems, to achieve good lap joints, improve electrical conductivity, and reduce impedance

Active Publication Date: 2019-12-31
深圳市善柔科技有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing a silver nanowire conductive film, aiming to solve the technical problem that the PVP removal effect on the surface of the existing silver nanowire is not ideal

Method used

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  • Preparation method of silver nanowire conductive film
  • Preparation method of silver nanowire conductive film

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preparation example Construction

[0015] The embodiment of the present invention provides a kind of preparation method of silver nanowire conductive film, such as figure 1 Shown, this preparation method comprises the steps:

[0016] S01: Provide the substrate;

[0017] S02: coating the silver nanowire ink on the substrate to form an initial silver nanowire film;

[0018] S03: The initial silver nanowire film is mixed with a solution containing ammonium ions and borohydride ions, and then dried to obtain a silver nanowire conductive film.

[0019] The preparation method of the silver nanowire conductive film provided by the present invention comprises: after the silver nanowire ink is used to form an initial silver nanowire film on the substrate, the initial silver nanowire film is mixed with a solution containing ammonium ions and borohydride ions During the mixing process, the ammonium ions in the solution have a strong complexation effect with the Ag on the surface of the silver nanowires, which will quick...

Embodiment 1

[0034] A preparation method of silver nanowire conductive film, comprising the steps of:

[0035] Spin-coat the prepared silver nanowire ink on clean PET to obtain AgNWs film (part of the silver nanowire surface is bound with PVP); after drying, soak in a mixture of 0.01mol / L sodium borohydride and 0.5mol / L ammonia water solution for 200s, then rinsed with water and ethanol three times, and dried in a nitrogen atmosphere to obtain a AgNWs film with a clean surface.

Embodiment 2

[0037] A preparation method of silver nanowire conductive film, comprising the steps of:

[0038] The prepared AgNWs ink was spin-coated on clean PET to obtain AgNWs film (part of the silver nanowire surface was combined with PVP); after drying, it was soaked in a mixed solution of 0.3M sodium borohydride and 2M ammonia water for continuous After 30 s, rinse with water and ethanol three times successively, and dry in a nitrogen atmosphere to obtain a AgNWs film with a clean surface.

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Abstract

The invention belongs to the technical field of nano materials, and particularly relates to a preparation method of a silver nanowire conductive film. The preparation method comprises steps of providing a substrate, coating silver nanowire ink on the substrate to form an initial silver nanowire film, mixing the initial silver nanowire film with solution containing ammonium ions and borohydride ions, and then performing drying treatment to obtain the silver nanowire conductive film. The preparation method of the silver nanowire conductive film is advantaged in that the ammonium ions and the borohydride ions are combined to effectively remove PVP on a surface of a silver nanowire, so the silver nanowire is better lapped, and thereby conductivity of the silver nanowire conductive film is improved.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a preparation method of a silver nanowire conductive film. Background technique [0002] Silver nanowires (Silver Nanowires, AgNWs) generally refer to one-dimensional silver metal materials with a length of micrometer scale and a diameter of nanometer scale. Currently, silver nanowires are mainly synthesized by polyol reduction method, which inevitably uses polyvinylpyrrolidone (Polyvinyl Pyrrolidone, PVP) acts as a structure-directing agent to make silver nanowires grow in a single direction and provide dimensional stability to prevent the aggregation and precipitation of silver nanowires. The existence of PVP will block the overlapping of silver nanowires and affect its conductivity, so it needs to be removed, but PVP is rich in carbonyl groups, which can be used as ligands to chemically complex with the surface of silver nanowires, making PVP and silver...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00H01B13/30H01B5/14
CPCH01B5/14H01B13/0026H01B13/30
Inventor 陈建良李奇琳甘堃陈超云
Owner 深圳市善柔科技有限公司
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